Chromecast: adds stability metrics provider to track crashes.

chromecast/metrics/cast_stability_metrics_provider.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_METRICS_CHROME_STABILITY_METRICS_PROVIDER_H_
-#define CHROME_BROWSER_METRICS_CHROME_STABILITY_METRICS_PROVIDER_H_
+#ifndef CHROMECAST_METRICS_CAST_STABILITY_METRICS_PROVIDER_H_
+#define CHROMECAST_METRICS_CAST_STABILITY_METRICS_PROVIDER_H_
 
 #include "base/basictypes.h"
 #include "base/metrics/user_metrics.h"
 #include "base/process/kill.h"
 #include "components/metrics/metrics_provider.h"
 #include "content/public/browser/browser_child_process_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
+class MetricsService;
 class PrefRegistrySimple;
 
 namespace content {
 class RenderProcessHost;
 class WebContents;
 }
 
-// ChromeStabilityMetricsProvider gathers and logs Chrome-specific stability-
-// related metrics.
-class ChromeStabilityMetricsProvider
-    : public metrics::MetricsProvider,
+namespace chromecast {
+namespace metrics {
+
+// CastStabilityMetricsProvider gathers and logs stability-related metrics.
+// Loosely based on ChromeStabilityMetricsProvider from chrome/browser/metrics.
+class CastStabilityMetricsProvider
+    : public ::metrics::MetricsProvider,
       public content::BrowserChildProcessObserver,
       public content::NotificationObserver {
  public:
-  ChromeStabilityMetricsProvider();
-  virtual ~ChromeStabilityMetricsProvider();
+  // Registers local state prefs used by this class.
+  static void RegisterPrefs(PrefRegistrySimple* registry);
 
-  // metrics::MetricsDataProvider:
+  CastStabilityMetricsProvider();
+  virtual ~CastStabilityMetricsProvider();
+
+  // metrics::MetricsDataProvider implementation:
   virtual void OnRecordingEnabled() OVERRIDE;
   virtual void OnRecordingDisabled() OVERRIDE;
   virtual void ProvideStabilityMetrics(
-      metrics::SystemProfileProto* system_profile_proto) OVERRIDE;
-  virtual void ClearSavedStabilityMetrics() OVERRIDE;
-
-  // Registers local state prefs used by this class.
-  static void RegisterPrefs(PrefRegistrySimple* registry);
+      ::metrics::SystemProfileProto* system_profile_proto) OVERRIDE;
 
  private:
-  // content::NotificationObserver:
+  // content::NotificationObserver implementation:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
-  // content::BrowserChildProcessObserver:
+  // content::BrowserChildProcessObserver implementation:
   virtual void BrowserChildProcessCrashed(
       const content::ChildProcessData& data) OVERRIDE;
 
-  // Logs the initiation of a page load and uses |web_contents| to do
-  // additional logging of the type of page loaded.
-  void LogLoadStarted(content::WebContents* web_contents);
-
   // Records a renderer process crash.
   void LogRendererCrash(content::RenderProcessHost* host,
                         base::TerminationStatus status,
                         int exit_code);
 
   // Records a renderer process hang.
   void LogRendererHang();
 
   // Registrar for receiving stability-related notifications.
   content::NotificationRegistrar registrar_;
 
-  DISALLOW_COPY_AND_ASSIGN(ChromeStabilityMetricsProvider);
+  DISALLOW_COPY_AND_ASSIGN(CastStabilityMetricsProvider);
 };
 
-#endif  // CHROME_BROWSER_METRICS_CHROME_STABILITY_METRICS_PROVIDER_H_
+}  // namespace metrics
+}  // namespace chromecast
+
+#endif  // CHROMECAST_METRICS_CAST_STABILITY_METRICS_PROVIDER_H_